As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POSSIBLE MFG PARTS NOT TO SPECIFICATIONS. MFG OF ORIG UNKNOWN. (GENERIC) LESS THAN 7 FLT HOURS IAW LAMP (AVERAGE) FROM INSTALLATION TO REPLACEMENT. HAVE REPLACED AT LEAST 5 LAMPS IAW AIRCRAFT IN LESS THAN 30 FLIGHT HOURS EACH. NO CIRCUIT BREAKERS POPPING. TROUBLESHOOTING SHOWS NO DISCREPANCIES ON EITHER AIRCRAFT. NO MFG INFORMATION ON PARTS BOX OR ON THE PART. (K)